| 54ACT2525DMQB | National Semiconductor | 1-to-8 Minimum Skew Clock Driver |
| 54ACT2525FMQB | National Semiconductor | 1-to-8 Minimum Skew Clock Driver |
| 54ACT2525LMQB | National Semiconductor | 1-to-8 Minimum Skew Clock Driver |
| 54ACT253 | National Semiconductor | Dual 4-Input Multiplexer with TRI-STATE Outputs |
| 54ACT257 | National Semiconductor | Quad 2-Input Multiplexer with TRI-STATE Outputs |
| 54ACT258 | National Semiconductor | Quad 2-Input Multiplexer with TRI-STATE Outputs |
| 54ACT283 | National Semiconductor | 4-Bit Binary Full Adder with Fast Carry |
| 54ACT283DMQB | National Semiconductor | 4-Bit Binary Full Adder with Fast Carry |
| 54ACT283FMQB | National Semiconductor | 4-Bit Binary Full Adder with Fast Carry |
| 54ACT283LMQB | National Semiconductor | 4-Bit Binary Full Adder with Fast Carry |
| 54ACT299 | National Semiconductor | 8-Input Universal Shift/Storage Register with Common Parallel I/O Pins |
| 54ACT323 | National Semiconductor | 8-Bit Universal Shift/Storage Register with Synchronous Reset and Common I/O Pins |
| 54ACT373 | National Semiconductor | Octal Transparent Latch with TRI-STATE Outputs |
| 54ACT373DM-MLS | National Semiconductor | Octal Transparent Latch with TRI-STATE Outputs |
| 54ACT373FM-MLS | National Semiconductor | Octal Transparent Latch with TRI-STATE Outputs |
| 54ACT374 | National Semiconductor | Octal D Flip-Flop with TRI-STATE Outputs |
| 54ACT374FM-MLS | National Semiconductor | Octal D Flip-Flop with TRI-STATE Outputs |
| 54ACT374WG-MLS | National Semiconductor | Octal D Flip-Flop with TRI-STATE Outputs |
| 54ACT377 | National Semiconductor | Octal D Flip-Flop with Clock Enable |
| 54ACT399 | National Semiconductor | Quad 2-Port Register |